KR920022704A - Frequency source circuit in mobile cordless telephone - Google Patents

Frequency source circuit in mobile cordless telephone Download PDF

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Publication number
KR920022704A
KR920022704A KR1019910008357A KR910008357A KR920022704A KR 920022704 A KR920022704 A KR 920022704A KR 1019910008357 A KR1019910008357 A KR 1019910008357A KR 910008357 A KR910008357 A KR 910008357A KR 920022704 A KR920022704 A KR 920022704A
Authority
KR
South Korea
Prior art keywords
frequency
source circuit
frequency source
oscillation
multiplier
Prior art date
Application number
KR1019910008357A
Other languages
Korean (ko)
Other versions
KR940007469B1 (en
Inventor
하상욱
Original Assignee
정용문
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019910008357A priority Critical patent/KR940007469B1/en
Priority to FR9115341A priority patent/FR2676877A1/en
Priority to US07/804,706 priority patent/US5321738A/en
Priority to JP3342579A priority patent/JPH04361433A/en
Priority to ITMI913494A priority patent/IT1252590B/en
Priority to DE4143197A priority patent/DE4143197A1/en
Priority to GB9127518A priority patent/GB2256103A/en
Publication of KR920022704A publication Critical patent/KR920022704A/en
Application granted granted Critical
Publication of KR940007469B1 publication Critical patent/KR940007469B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transceivers (AREA)
  • Superheterodyne Receivers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Telephone Set Structure (AREA)

Abstract

내용 없음.No content.

Description

이동 무선 전화기에 있어서 주파수 소스회로Frequency source circuit in mobile cordless telephone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 회로도.2 is a circuit diagram according to the present invention.

Claims (6)

주파수 합성기(20,12) 및 오디오 프로세서(19), 커스텀IC(18) 제2혼합기(14)를 구비한 이동 무선 전화기의 주파수 소스 회로에 있어서, 상기 주파수 합성기(20)으 발진 주파수를 소정 분주하여 상기 오디오 프로세서(19)의 기준 크럭 주파수를 발생하는 제1수단과, 상기 주파수 합성기(20)의 발진주파수를 소정 체배하여 상기 제2혼합기(14)에서 제2중간 주파수를 출력토록 국부 발진 주파수로 사용하는 제2수단과, 상기 제2수단의 출력을 소정 분주하여 상기 커스텀 IC(18)의 클럭 주파수를 발생하는 제3수단으로 구성됨을 특징으로 하는 이동 무선 전화기에 있어서 주파수 소스회로.In the frequency source circuit of a mobile telephone having a frequency synthesizer (20, 12), an audio processor (19), a custom IC (18), and a second mixer (14), the frequency synthesizer (20) divides an oscillation frequency by a predetermined frequency. Local oscillation frequency such that the first means for generating the reference clock frequency of the audio processor 19 and the oscillation frequency of the frequency synthesizer 20 are multiplied by a predetermined multiplier so that the second mixer 14 outputs a second intermediate frequency. And second means for generating a clock frequency of the custom IC by dividing a predetermined output of the second means. 제1항에 있어서, 주파수 합성기(20)의 발진 주진기가 15.36MHZ로 온도 보상형 수정 발진기임을 특징으로 하는 이동 무선 전화기에 있어서 주파수 소스회로.2. The frequency source circuit as set forth in claim 1, wherein the oscillation main oscillator of the frequency synthesizer (20) is a temperature compensated crystal oscillator of 15.36 MHz. 제1항에 있어서, 제1수단의 분주비가 20배인 분주기임을 특징으로 하는 이동 무선 전화기에 있어서 주파수 소스회로.2. A frequency source circuit as set forth in claim 1, wherein a frequency divider of the first means is 20 times. 제1항에 있어서, 제2수단의 체배비가 6체배인 체배기임을 특징으로 하는 이동 무선 전화기에 있어서 주파수 소스회로.2. The frequency source circuit as set forth in claim 1, wherein the multiplication ratio of the second means is a multiplier of six multiplications. 제1항에 있어서, 제3수단의 분배비가 9배인 분주임을 특징으로 하는 이동무선 전화기에 있어서 주파수 소스회로.2. A frequency source circuit as set forth in claim 1, wherein the distribution ratio of the third means is 9 times. 이동 무선 전화기의 주파수 소스회로에 있어서, 온도 보상형 수정발진기(11)의 발진신호(15.36MHZ)를 20배 분주하여 상기 오디오프로세서(19)에서 요구하는 기준 클럭신호(768KHZ)를 20배 분주하여 상기 오디오프로세서(19)에서 요구하는 기준 클럭신호(768KHZ)를 발생하는 제1분주기(17)와, 상기 온도 보상형 수정 발진기(11)의 발진신호(15.36MHZ)를 6체배하여 상기 제2믹스(14)의 제2국부 발진 신호로 제공되는 체배기(15)와, 상기 체배기(15)의 출력을 9배 분주하여 상기 커스텀 IC(18)에서 요구하는 기준 클럭 신호(10.24MHZ)를 발생하는 제2분주기(16)으로 구성됨을 특징으로 하는 이동 무선 전화기에 있어서 주파수 소스회로.In the frequency source circuit of the mobile radio telephone, the oscillation signal (15.36MHZ) of the temperature compensated crystal oscillator 11 is divided by 20 times to divide the reference clock signal (768KHZ) required by the audio processor 19 by 20 times. The first divider 17 generating the reference clock signal 768KHZ required by the audio processor 19 and the oscillation signal 15.36MHZ of the temperature compensated crystal oscillator 11 are multiplied by six to the second. The multiplier 15 provided as the second local oscillation signal of the mix 14 and the output of the multiplier 15 are divided 9 times to generate a reference clock signal (10.24MHZ) required by the custom IC 18. A frequency source circuit in a mobile wireless telephone, characterized in that it comprises a second divider (16). ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019910008357A 1991-05-23 1991-05-23 Frequency source circuit of handy-phone KR940007469B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1019910008357A KR940007469B1 (en) 1991-05-23 1991-05-23 Frequency source circuit of handy-phone
FR9115341A FR2676877A1 (en) 1991-05-23 1991-12-11 Frequency source circuit for a mobile radiotelephone
US07/804,706 US5321738A (en) 1991-05-23 1991-12-11 Switch apparatus of a portable cordless telephone using an antenna
JP3342579A JPH04361433A (en) 1991-05-23 1991-12-25 Frequency source circuit in radiotelephone
ITMI913494A IT1252590B (en) 1991-05-23 1991-12-27 FREQUENCY GENERATOR CIRCUIT FOR A MOBILE RADIO TELEPHONE
DE4143197A DE4143197A1 (en) 1991-05-23 1991-12-30 CIRCUIT FOR FREQUENCY SOURCES OF A MOBILE RADIO TELEPHONE
GB9127518A GB2256103A (en) 1991-05-23 1991-12-31 Multi-frequency signal source for transeiver circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910008357A KR940007469B1 (en) 1991-05-23 1991-05-23 Frequency source circuit of handy-phone

Publications (2)

Publication Number Publication Date
KR920022704A true KR920022704A (en) 1992-12-19
KR940007469B1 KR940007469B1 (en) 1994-08-18

Family

ID=19314798

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910008357A KR940007469B1 (en) 1991-05-23 1991-05-23 Frequency source circuit of handy-phone

Country Status (7)

Country Link
US (1) US5321738A (en)
JP (1) JPH04361433A (en)
KR (1) KR940007469B1 (en)
DE (1) DE4143197A1 (en)
FR (1) FR2676877A1 (en)
GB (1) GB2256103A (en)
IT (1) IT1252590B (en)

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Also Published As

Publication number Publication date
ITMI913494A0 (en) 1991-12-27
FR2676877A1 (en) 1992-11-27
IT1252590B (en) 1995-06-19
DE4143197A1 (en) 1992-11-26
GB2256103A (en) 1992-11-25
JPH04361433A (en) 1992-12-15
ITMI913494A1 (en) 1993-06-27
KR940007469B1 (en) 1994-08-18
GB9127518D0 (en) 1992-02-19
US5321738A (en) 1994-06-14

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